/* ============================================================
   CLAUDE COACHING COURSE PORTAL  (/course/)
   Inherits the tokens, buttons, eyebrows and nav mark from
   /styles/main.css. Square corners, 1px rules, mono labels,
   one ember accent. Layout: an ink top bar, a dark chapter
   sidebar on the left, the chapter on paper to the right. On a
   phone the sidebar folds into a menu under the top bar.
   ============================================================ */

.visually-hidden {
  position: absolute; width: 1px; height: 1px; margin: -1px; padding: 0;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}
[hidden] { display: none !important; }

/* ---------- Top bar ---------- */
.cbar {
  position: sticky; top: 0; z-index: 40;
  display: flex; align-items: stretch; justify-content: space-between; gap: 16px;
  min-height: 58px; padding-left: var(--gutter);
  background: var(--ink); color: var(--paper);
  border-bottom: 1px solid var(--ember);
}
.cbar__who {
  display: flex; align-items: center; padding: 0 var(--gutter);
  border-left: 1px solid var(--ink-line-2);
  font-family: var(--mono); font-size: 12px; letter-spacing: 0.06em; color: var(--sage);
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.cbar__menu {
  display: none; align-items: center; gap: 10px;
  padding: 0 18px; border: none; border-radius: 0; cursor: pointer;
  background: var(--ember); color: #fff;
  font-family: var(--mono); font-weight: 500; font-size: 12px; letter-spacing: 0.1em; text-transform: uppercase;
}

.cdemo {
  padding: 8px var(--gutter);
  background: var(--cream-soft); color: var(--ink); border-bottom: 1px solid var(--ink);
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.1em; text-transform: uppercase;
}

/* ---------- Gate: sign in, reset, set password ---------- */
.gate { flex: 1 0 auto; background: var(--ink); color: var(--paper); min-height: calc(100vh - 58px); }
.gate__inner { max-width: 520px; margin: 0 auto; padding: 64px var(--gutter) 80px; }
.gate__title { margin: 14px 0 0; font-size: clamp(36px, 5.4vw, 56px); line-height: 1.02; letter-spacing: -0.01em; }
.gate__body { margin-top: 16px; font-size: 16px; line-height: 1.6; color: var(--sand-text); }
.gate__body a { color: var(--ember-lt); }
.gate__body strong { color: var(--paper); font-weight: 500; }
.gate__panel > .btn, .gate__btns { margin-top: 26px; }

.gform { display: grid; gap: 18px; }
.gform__field { display: grid; gap: 8px; }
.gform__field span {
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--sage-2);
}
.gform input {
  width: 100%; padding: 14px; border-radius: 0;
  background: var(--ink-2); color: var(--paper); border: 1px solid var(--ink-line-3);
  font-family: var(--sans); font-size: 16px;
}
.gform input:focus { outline: none; border-color: var(--ember); }
.gform__submit { justify-content: center; width: 100%; margin-top: 6px; }
.gform__submit:disabled { opacity: 0.6; cursor: wait; }
.gform__link {
  justify-self: start; padding: 0; border: none; background: none; cursor: pointer;
  font-family: var(--mono); font-size: 12px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--ember-lt);
}
.gform__link:hover { color: var(--paper); }
/* Authenticator QR code: white backing so phones can read it on the dark gate. */
.gform__qr { width: 200px; height: 200px; padding: 10px; background: #fff; }
.gform__msg { margin-top: 20px; font-size: 15px; color: var(--sand-text); }
.gform__msg.is-err { color: var(--ember-lt); }
.gform__msg.is-ok { color: var(--paper); }

/* ---------- Shell ---------- */
.cshell { display: grid; grid-template-columns: 290px minmax(0, 1fr); flex: 1 0 auto; background: var(--paper); }
.cmain { min-width: 0; }
#view:focus { outline: none; }

/* ---------- Sidebar ---------- */
.cside {
  position: sticky; top: 58px; align-self: start;
  height: calc(100vh - 58px); overflow-y: auto;
  display: flex; flex-direction: column; justify-content: space-between;
  background: var(--ink); color: var(--paper); border-right: 1px solid var(--ink-line);
  scrollbar-width: thin; scrollbar-color: var(--ink-line-3) var(--ink);
}
.cside__list--foot { border-top: 1px solid var(--ink-line); }
.cside a, .cside button, .cside summary {
  display: grid; grid-template-columns: 16px minmax(0, 1fr); gap: 12px; align-items: start;
  width: 100%; padding: 10px 18px; border: none; border-bottom: 1px solid var(--ink-line); border-radius: 0;
  background: none; color: var(--sage-2); text-align: left; cursor: pointer;
  font-family: var(--sans); font-size: 14px; line-height: 1.3;
  transition: background-color .15s linear, color .15s linear;
}
.cside__list--foot li:last-child button { border-bottom: none; }
.cside a:hover, .cside button:hover, .cside summary:hover { background: var(--ink-2); color: #fff; }

/* Resources and Admin dropdowns: a chevron on the summary, indented links. */
.cside summary { grid-template-columns: 16px minmax(0, 1fr) auto; list-style: none; }
.cside summary::-webkit-details-marker { display: none; }
.cside summary::after {
  content: ""; width: 7px; height: 7px; margin: 4px 2px 0 0;
  border: solid var(--sage); border-width: 0 1.5px 1.5px 0; transform: rotate(45deg);
  transition: transform .15s linear;
}
.cside details[open] > summary::after { transform: rotate(-135deg); margin-top: 7px; }
.cside__group ul a { grid-template-columns: minmax(0, 1fr); padding: 8px 18px 8px 46px; font-size: 13.5px; }
.cside a.is-current { background: var(--ink-2); color: #fff; box-shadow: inset 3px 0 0 var(--ember); }
.cside__label { min-width: 0; }
.cside__num {
  display: block; margin-bottom: 2px;
  font-family: var(--mono); font-size: 10px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--sage);
}
.cside__sub {
  display: block; margin-top: 4px;
  font-family: var(--mono); font-size: 10px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--sage);
}

/* The state mark: hollow square when open, ember tick when complete,
   dashed square when locked. Nav links without a state show a dot. */
.cside__mark {
  position: relative; width: 14px; height: 14px; margin-top: 2px;
}
.cside__list--foot .cside__mark, [data-route="home"] .cside__mark { width: 6px; height: 6px; margin: 6px 4px 0; background: var(--ink-line-3); }
a.is-open .cside__mark { border: 1px solid var(--sage-2); }
a.is-done .cside__mark { background: var(--ember); }
a.is-done .cside__mark::after {
  content: ""; position: absolute; left: 4px; top: 1px; width: 4px; height: 8px;
  border: solid #fff; border-width: 0 2px 2px 0; transform: rotate(45deg);
}
a.is-locked { color: var(--sage); }
a.is-locked .cside__mark { border: 1px dashed var(--ink-line-3); }
a.is-locked .cside__mark::after {
  content: ""; position: absolute; left: 3px; top: 5px; width: 6px; height: 1px; background: var(--sage);
}
a.is-done .cside__sub { color: var(--ember-lt); }

/* ---------- Unpaid banner ---------- */
.cbanner {
  display: flex; flex-wrap: wrap; align-items: baseline; gap: 6px 14px;
  padding: 14px clamp(18px, 4vw, 48px);
  background: var(--ember); color: #fff; border-bottom: 1px solid var(--ink);
  font-size: 15px; line-height: 1.5;
}
.cbanner__tag {
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--cream-tag);
}

/* ---------- Chapter page ---------- */
.chap { max-width: 860px; padding: 44px clamp(18px, 4vw, 48px) 72px; color: var(--ink); }
.chap__title { margin-top: 12px; font-size: clamp(38px, 5.6vw, 62px); line-height: 0.98; letter-spacing: -0.02em; }
.chap__dek { margin-top: 16px; max-width: 60ch; font-size: 18px; line-height: 1.55; color: var(--ink-soft); }
.chap__actions { margin-top: 26px; }
.chap__actions .btn { padding: 13px 18px; }
.chap__note { margin-top: 22px; font-family: var(--mono); font-size: 12px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--ink-mute); }
.chap__intro { margin-top: 28px; }

/* Shared markdown body */
.md { font-size: 16px; line-height: 1.65; color: var(--ink-soft); }
.md p, .md ul, .md ol { margin: 0 0 14px; }
.md > :last-child { margin-bottom: 0; }
.md ul, .md ol { padding-left: 22px; }
.md ul { list-style: square; }
.md ol { list-style: decimal; }
.md li { margin-bottom: 6px; }
.md ul ul { margin: 6px 0 0; }
.md h4 { margin: 18px 0 8px; font-family: var(--mono); font-weight: 500; font-size: 12px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--ink); }
.md strong { color: var(--ink); font-weight: 700; }
.md code { padding: 1px 5px; background: rgba(14, 13, 11, 0.07); font-family: var(--mono); font-size: 0.88em; }
.md a { color: var(--ember); border-bottom: 1px solid rgba(232, 80, 47, 0.35); }
.md a:hover { color: var(--ink); border-bottom-color: var(--ink); }

/* Video slot (filled by the recordings task) */
.vid {
  margin-top: 30px; aspect-ratio: 16 / 9;
  display: flex; flex-direction: column; justify-content: flex-end; gap: 6px; padding: 22px;
  background: var(--ink); color: var(--paper); border: 1px solid var(--ink);
  background-image: linear-gradient(var(--ink-line) 1px, transparent 1px), linear-gradient(90deg, var(--ink-line) 1px, transparent 1px);
  background-size: 48px 48px;
}
.vid__tag { font-family: var(--mono); font-size: 11px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--ember-lt); }
.vid__title { font-family: var(--serif); font-size: clamp(24px, 3vw, 34px); line-height: 1.05; }
.vid__note { font-family: var(--mono); font-size: 11px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--sage); }

/* "Start here" box */
.minimum { margin-top: 30px; padding: 22px 24px; border: 1px solid var(--ink); background: #fff8ef; }
.minimum__tag {
  margin-bottom: 12px; font-family: var(--mono); font-size: 11px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--ember);
}

/* Tick boxes: hard squares, ember when done */
.tick {
  appearance: none; -webkit-appearance: none; flex: none;
  position: relative; width: 24px; height: 24px; margin: 0;
  border: 1px solid var(--ink); border-radius: 0; background: var(--paper); cursor: pointer;
}
.tick:checked { background: var(--ember); border-color: var(--ember); }
.tick:checked::after {
  content: ""; position: absolute; left: 7px; top: 2px; width: 7px; height: 13px;
  border: solid #fff; border-width: 0 2px 2px 0; transform: rotate(45deg);
}
.tick:focus-visible { outline: 2px solid var(--ember); outline-offset: 2px; }

/* Chapter checklist bar */
.master {
  margin-top: 34px; position: relative;
  display: grid; grid-template-columns: auto minmax(0, 1fr) auto; align-items: center; gap: 14px;
  padding: 18px 20px 22px; background: var(--ink); color: var(--paper); cursor: pointer;
}
.master .tick { background: var(--ink); border-color: var(--paper); }
.master .tick:checked { background: var(--ember); border-color: var(--ember); }
.master__label { font-family: var(--serif); font-size: 24px; line-height: 1.1; }
.master__count { font-family: var(--mono); font-size: 12px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--sage-2); white-space: nowrap; }
.master__bar { position: absolute; left: 0; right: 0; bottom: 0; height: 4px; background: var(--ink-line-3); }
.master__bar span { display: block; height: 100%; background: var(--ember); transition: width .2s linear; }

/* Numbered step cards, prompts and callouts in teaching order */
.flow { display: grid; gap: 14px; margin-top: 14px; }
.step {
  display: grid; grid-template-columns: 52px minmax(0, 1fr) auto; gap: 18px; align-items: start;
  padding: 22px 22px 24px 0; border: 1px solid var(--rule); background: var(--paper);
  transition: border-color .15s linear, background-color .15s linear;
}
.step__num {
  align-self: stretch; padding-top: 2px; text-align: center;
  border-right: 1px solid var(--rule);
  font-family: var(--mono); font-weight: 500; font-size: 14px; letter-spacing: 0.06em; color: var(--ink-mute);
}
.step__title { font-size: clamp(22px, 2.6vw, 28px); line-height: 1.08; letter-spacing: -0.01em; margin-bottom: 10px; }
.step__links { display: flex; flex-wrap: wrap; gap: 8px 18px; margin-top: 14px; }
.step__links a {
  font-family: var(--mono); font-size: 12px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--ember);
  border-bottom: 1px solid rgba(232, 80, 47, 0.35);
}
.step__links a:hover { color: var(--ink); border-bottom-color: var(--ink); }
.step__check {
  display: flex; flex-direction: column; align-items: center; gap: 6px; cursor: pointer;
  font-family: var(--mono); font-size: 10px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--ink-mute);
}
.step.is-done { border-color: var(--ink); background: #fbf7f0; }
.step.is-done .step__num { color: var(--ember); border-right-color: var(--ink); }
.step.is-done .step__check { color: var(--ember); }

.pbox { border: 1px solid var(--ink); background: var(--ink); }
.pbox__head { display: flex; align-items: center; gap: 14px; padding: 10px 10px 10px 20px; border-bottom: 1px solid var(--ink-line); }
.pbox__tag { font-family: var(--mono); font-size: 11px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--ember-lt); }
.pbox__title { flex: 1; min-width: 0; color: var(--paper); font-size: 15px; }
.pbox__copy { margin-left: auto; padding: 9px 14px; font-size: 11px; }
.pbox .prompt {
  margin: 0; padding: 20px 22px;
  background: var(--ink); color: var(--paper); border-left: 3px solid var(--ember);
  font-size: 16px; line-height: 1.65; white-space: pre-wrap; overflow-wrap: anywhere;
}
.pbox .prompt .var { color: var(--ember-lt); border-bottom: 1px solid var(--ember-lt); font-family: var(--mono); font-size: 14px; }
/* A prompt inside a step, minimum or FAQ card */
.pbox--inset { margin-top: 16px; }
.faq .pbox--inset { margin: 0 0 18px; }
.minimum .pbox--inset .prompt, .step .pbox--inset .prompt { font-size: 15px; }
.pbox__note { padding: 14px 22px; background: var(--ink-2); color: var(--sand-text); font-size: 14px; }
.pbox__note strong, .pbox__note a { color: var(--paper); }

.callout { padding: 26px 28px; background: var(--ember); color: #fff; }
.callout__title { margin-bottom: 10px; font-family: var(--serif); font-size: clamp(24px, 3vw, 32px); line-height: 1.05; }
.callout .md, .callout .md strong { color: #fff; }
.callout .md a { color: #fff; border-bottom-color: rgba(255, 255, 255, 0.6); }
.callout .md code { background: rgba(14, 13, 11, 0.18); }

/* FAQs */
.faqs { margin-top: 48px; border-top: 1px solid var(--ink); }
.faqs__title { padding: 14px 0; font-family: var(--mono); font-size: 11px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--ink-mute); }
.faq { border-bottom: 1px solid var(--rule); }
.faq summary {
  display: flex; justify-content: space-between; gap: 18px; padding: 16px 0; cursor: pointer; list-style: none;
  font-family: var(--serif); font-size: 22px; line-height: 1.15;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; font-family: var(--mono); font-size: 18px; color: var(--ember); }
.faq[open] summary::after { content: "\2212"; }
.faq summary:hover { color: var(--ember); }
.faq .md { padding: 0 0 18px; max-width: 64ch; }

/* Finish */
.finish {
  margin-top: 40px; padding: 26px 24px; border: 1px solid var(--ink);
  display: grid; gap: 14px; justify-items: start;
}
.finish:empty { display: none; }
.finish__tag { font-family: var(--mono); font-size: 11px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--ember); }
.finish__text { font-size: 15px; color: var(--ink-soft); }
.finish .btn:disabled { background: var(--rule); color: var(--ink-mute); cursor: not-allowed; }
.finish__next { font-family: var(--mono); font-size: 13px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--ember); }
.finish__next:hover { color: var(--ink); }

/* Locked chapter */
.locked { margin-top: 32px; padding: 26px 24px; border: 1px dashed var(--ink-mute); }
.locked__tag { font-family: var(--mono); font-size: 11px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--ink-mute); }
.locked__why { margin-top: 8px; font-family: var(--serif); font-size: clamp(26px, 3.4vw, 36px); line-height: 1.08; }
.locked__back { display: inline-block; margin-top: 18px; font-family: var(--mono); font-size: 12px; letter-spacing: 0.08em; text-transform: uppercase; }
.locked__back:hover { color: var(--ink); }

/* Home chapter list */
.clist { margin-top: 36px; border-top: 1px solid var(--ink); }
.clist__row {
  display: grid; grid-template-columns: 60px minmax(0, 1fr) auto; gap: 8px 18px; align-items: baseline;
  padding: 16px 12px 16px 0; border-bottom: 1px solid var(--rule); color: var(--ink);
  transition: background-color .15s linear, color .15s linear, padding-left .15s linear;
}
.clist__row:hover { background: var(--ink); color: var(--paper); padding-left: 12px; }
.clist__num { font-family: var(--mono); font-size: 12px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--ink-mute); }
.clist__title { font-family: var(--serif); font-size: clamp(21px, 2.4vw, 26px); line-height: 1.1; }
.clist__state { font-family: var(--mono); font-size: 11px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--ink-mute-2); text-align: right; }
.clist__row:hover .clist__num, .clist__row:hover .clist__state { color: var(--sage-2); }

/* ---------- Toast (as on /skills/) ---------- */
.toast {
  position: fixed; left: 50%; bottom: 24px; transform: translateX(-50%);
  padding: 10px 16px; background: var(--ink); color: var(--paper);
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.12em; text-transform: uppercase;
  opacity: 0; transition: opacity .2s linear; pointer-events: none; z-index: 50;
}
.toast.show { opacity: 1; }

/* ---------- Phone: the sidebar becomes a menu under the top bar ---------- */
@media (max-width: 899px) {
  .cbar__who { display: none; }
  .cbar__menu { display: flex; }
  .cshell { grid-template-columns: minmax(0, 1fr); }
  .cside {
    display: none; position: sticky; top: 58px; z-index: 30;
    height: auto; max-height: calc(100vh - 58px);
    border-right: none; border-bottom: 1px solid var(--ember);
  }
  .cside.is-open { display: flex; }
}
@media (max-width: 640px) {
  .chap { padding-top: 32px; }
  .step { grid-template-columns: 40px minmax(0, 1fr); gap: 14px; padding-right: 16px; }
  .step__check { grid-column: 2; flex-direction: row; justify-self: start; }
  .master { grid-template-columns: auto minmax(0, 1fr); }
  .master__count { grid-column: 2; }
  .master__label { font-size: 21px; }
  .clist__row { grid-template-columns: 44px minmax(0, 1fr); }
  .clist__state { grid-column: 2; text-align: left; }
  .gate__inner { padding-top: 44px; }
}
@media (prefers-reduced-motion: reduce) {
  .master__bar span { transition: none; }
}